Cool green roofs for the city's bus shelters was an initiative carried out by Groundwork Sheffield and Sheffield?s Green Roof Forum as part of a wider programme aimed at addressing the lack of green roofs across South Yorkshire. Bus shelters offer an ideal surface for greening, providing an attractive green space in our concrete dominated urban streets and offering much needed shade for waiting passengers. The living vegetation installed on the bus shelter is in a prime position to filter pollution and particulates from transport exhausts thereby protecting the health of waiting passengers. Greening of the bus shelters also highlights the value of integrating sustainable design and green travel in our attempts to reduce rates of climate change. The greening of the bus shelters has been a huge success capturing the public?s imagination and promoting sustainable technology.